Keyword Registration And Password Registration - Mitsubishi Electric MELSEC-A0J2H Series Handbook

2
REPLACING THE CPU MODULE
(2) Capacity of the various memories
The following shows the memory storing user programs, etc. and its capacity in each CPU module.
Item
Program memory
*2
ROM memory
Standard RAM
*3
Standard ROM
*1 The program memory indicates the flash ROM.
*2 The memory is the EP-ROM (option) for the ROM operation.
*3 The memory saves data such as a device comment and PC user data.

2.4.2 Keyword registration and password registration

A0J2HCPU prohibits programs from being read/written by keyword registration, whereas QCPU uses
password entries to do so. The following shows the details of executable functions.
Item
Method to prohibit
writing to program,
etc.
2
- 9
A0J2HCPU
32K bytes
4/8/16K bytes
–
–
A0J2HCPU
The following attribute can be configured to the
specified memory.
• Prohibition of read/write
Model name
QnUCPU
Q00UJCPU
*1
40K bytes
–
–
256K bytes
Model name
The equivalent function can be implemented by
collectively setting a password to all the files.
(Supplement)
The following attributes can be configured to each
specified file of the specified memory (drive) using
the password.
• Prohibition of read/write display
• Prohibition of write
Q00UCPU
*1
40K bytes
–
128K bytes
512K bytes
QCPU